Rotary differential force-pump



"(No. Model.)

' P. MUNZING-ER.

VBO'IIAM DIFFERENTIAL FORGE PU-MP. I 110.268.816. Patented Deo. 12', l1382.

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y UNITED STAT-Es PATENTV @EI-"ICE,

PETER ivIUNzINeEE, or PHILADELPHIA, PENNSYLVANIA...

ROTARY DII-'I-IERENITIAL FORCE-Powie.4

SPECIFICATION forming part of Letters Patent No. 268,816, dated December 12, 1882. Application filed January 23,18852. (No model.) r

I .',Zo all `whom it may concern:

Be it known that I, PETER MUNZINGER, of

the city and county of Philadelphia, in the are employed for diluting State of Pennsylvania, have invented a Rotary Differential Force-Pump for Aeriform Fluids,

of which the following is a specification.

The object 4oi" my invention is to provide a positively-operating device which shall be adapted for use in v connection with gas-engines, which shall be driven by the gas-engine In connection with which it is used, which shall com mingle air and gas in predetermined invariable proportions, and supply the commingled iiuid tothe engine.

My invention relates to the class of devices which are known as gas-mixers,7 and which rich hydrocarbon gases withatmospheric air. v

, In the accompanying drawings,'Figure 1 represents in transverse vertical sectional eleva.- tion an apparatus conveniently embodying my invention. Fig. 2 represents the same apparatus in longitudinal vertical sectional elevation.

In both of t-he drawings similar letters of reference indicate corresponding parts. In the drawings, A represents an exterior casing, which is'well made when of the shape represented in the drawings-that is to say, as

a rectangular` compartment having a curved top, or a top the cross-section of which is a semieircle. At both of its ends this casing is provided with two inlet-ports,B and 0,-which are preferably formed as castings of the character shown 'in the drawings, and which in such form are designed not only tocoustitute coverplates `D for the apertures in the end of the casing into which they are fitted, but also to afford inwardly-projecting journal-bearings E, adapted to receive and support the extremities of the central revolving shaft or axis, X, to which are connected the various members which together form the differential revolving chambers of the apparatus. These ports enter the casing in a direction coincident with its axis, and then make an elbow turn, so as to discharge verticallynpward.

The differentialchambers, of which there are twlo sets, respectively denominated by thel let-V ters "F F F2 F3 and G G G2 G3, and respectively designed to contain atmospheric air and gas, revolve with the shaft, and are formed by I chambers formed.

K K are two exterior caps or hoods, of cy, lindrical form, and of greater interior diameter than the diameter ot' the oriiices in the end webs. These caps are connected against the exterior faces of the webs, and are I'itted to surround, by means of openings cut centrally in their ends, respectively the air-port and gasport. These caps internally form vestibules M, into which the ports named respectively discharge gas and air, and from out of which the gas and air find passage through the oriiices in the end webs into the chambers.

The diaphragm H, which divides the two series of chambers,extends from the inner face of each curved plate inward to the shaft, which it closely surrounds by means of a journalbearing, N. The original location of this diaphragm, considered with reference to endwise position upon the shaft and to or from the opposite end webs, is made or predetermined to be such as to properly proportion the interior area of the series ot' chambers lying upon its respective sides. Thus, for instance, in the arrangement depicted in the drawings the diaphragm is located close to the right-hand end web of the revolving chambers, so that the capacity of' the right-hand series of chambers is approximately one-fifteenth that of the lefthand series offchambers. By the variation ot' the position of this diaphragm therespective interior areas or containing capacities of the two sets of chambers can be regulated atv will.

Peripherally surrounding or erected upon the left-hand hood are a series of teethwhich form a spur-wheel, O, and mesh with 'a pinion,

ssV

P, set within the casingupon the end ofa shaft,

Q,journaled through the end of the casing, and carrying exterior to the casin g a pulley, R, orvother driving device.

It will be readily understood that upon applicationof power to the pulley the caps and IcoY their connected double series of chambers are rotated with their central shaft through the instrumentality of the pinion and spur-wheel.

The casing is made water-tight, and is to be filled with water to a level above its longitudinal axis, but below the discharge-openings of the gas and air ports and below the under side of the top of the circular orifices in the webs, which orifices, it is to be remembered, alone afford means of communication between the respcctive vestibules and contiguous series of ref volving chambers.

As will be observed by reference to Fig. l of the drawings, the curved plates are not strictly arc-shaped in cross-section, but are so disposed with relation to each other as to be involuted and to form chambers, the entrances to and exits from which are of less sectional area than those of the central portions of the chambers. Sis an exit-port located in the top of the casing, and designed to connect with the feedtube of a gas-engine, and to serve as a means for permitting of the passage from out of the1 casing of the commingled air and gas.

Such being the construction of a convenient form of the apparatus embodying my invention, its operation is as follows: Motion imparted to the driving-pulley is communicated through the gearing described to the chambers, so as to revolve the latter from right to left of Fig. l, or in the direction indicated by the large arrow in said figure. Communication with a source of air-supplyin connection with the lefthand inlet-port and with a source of gas-snpply in connection with the right-hand inlet port being established, air on the one hand and gas on the other ills that portion of the vestibule into which the inlet-ports respectively open, and which is above the water-line, and thence through the orifices L in the end webs of the chambers enters and fills such portions of the chambers as are above the level of the water and to which entrance can be had. In the revolution of any particular chamber communication for the air or gas with its interior is continuously to be had until such time as the inner end of the curved plate bounding it upon its then under side,in due course of its rotation,dps beneath the level of the water in the casing, after which communication from the vestibule through the orifice in the end web is shut off from that particular chamber,

Vand no more air or gas can enter it, but only enter that chamber which next succeeds it. For example, in Fig. 1 ofthe drawings, F is the chamber into which, by virtue of its position with reference to the orifice L, the largest amount of airis flowing, and into which it will continue to flow until such time as the inner Vend of the curved plate I shall in its revolution dip beneath the level lof the Water, after which latter action takes place air ceases to iiow into said chamber F, and flows only into the cham- `'Der F.

ln the view of the drawings referred to, F3 represents a chamber which is full of air, and

from which in the further revolution of the chambers the air will be forced out under pressure in the direction of the small arrow by the gradual revolution of the chamber into and beneath the water. F2 represents a chamber from which the gas is 4almost entirely discharged by the revolution referred to. The conditions of indux and discharge of air described above with reference to the air-chambers are equally true with reference to the inux and discharge of gas in and from the gaschambers. It will be understood that, by reason of the fact that the exits from the chambers are of 'less breadth than the central portions of the chambers, the gas or air is forced from out the chambers under pressure. The gas and air which is forced from out the revolv ing chambers becomes commingled within the dome of the casing, and in its commingled condition is forced through the exit-port, and thence applied to a gas-engine.

As a matter of convenience, the diaphragm may be arranged to have an endwise movement upon the shaft and with reference to the curved plates, so as to proportion the areas of the respective series of chambers.

I am aware that various devices adapted to commingle air and gas or different fluids in predetermined proportions now exist. I am also aware that it is not novel with me to drive both separate and double gas-drums by mechanical power as opposed to that of the gas itself.. I am likewise aware that carburetors have been constructed in separate chambers respectively fed with air and gas from inlets around the periphery of the outer sides or end webs of said chambers, and revolved by the power of the escapn giuids, and to none of such constructions, broadly considered, do I lay claim; but the gist of my invention resides, first, in a rotary differential force-pump of the specific character herein described and claimed, theforcing action of which is due notonly tothe construction and arrangement of its various parts themselves, but also to the fact that the pump as a whole is revolved by positivelyoperating mechanism,and, second,in the supplying of previously-commingled air and gas to a gas-engine.

The advantages incident to my invention reside in the fact, first, that it insures the thor- .ough cominixture of the air and gas in accurate proportions accurately predetermined by the proportional areas respectively of the gas and air chambers, and, second, that the unil'ormly-commingled fluid thus provided is supplied more rapidly to the cylinder ot' the engine by virtue of its exit from the chambers under pressure. t

It is obvious that while I have referred to the employment of air and gas only in my apparatus, yet it is equally well adapted for employment with any aeriform fluids.

Having thus described my invention, y I claim- 1. The combination, to form a rotary dif- IOO IIO

ferential force-pump, of an inclosing casing containing water, a combined series of revolving gas and air chambers ot' dil'erent but of proportional interior areas formed of curved plates arranged'in involute order, inclosed by two end webs having central inlets and divided by a tight'diaphragm, two hoods applied on the outer faces of the end webs so as to inclose the central inlets therein, and

two inlet-pipes opening respectively Within the hoods, substantially as set forth.

2. In combination with a rotary differential force-pump consisting` of a combined series of revolving gas and; air chambers of derent but of proportional interior areas, formed ot? curved plates arranged in involute order, in-

closed by twoend webs having central inlets and divided by a tight diaphragm, two hoods applied on the outer faces of the end webs, so as to inclose the central inlets therein, and two inletpipes opening respectively within the hoods, mechanism for revolving said pump so as to cause it to force the gas and air from out its chambers, and an inclosing casingcontaining water, all substantially as set forth.

In testimony whereof l have hereunto signed my name this 19th day of January,-A. D. 12582.`

PETER MUNZINGER.

In the presence ot- J. BoNsALL TAYLOR, WM. C. STRAWBRIDGE. 

